The goal is to flesh out a public health research agenda on Zika issues.
As cases of the mosquito-borne disease mount, the CDC urges pregnant women to skip going to the Summer Olympics in Brazil.
The CDC details 6 sexual transmission cases, some in pregnant women.
Also, WHO guidance today addresses breastfeeding, microcephaly, and Guillain-Barre syndrome.
WHO and PAHO leaders continue assessing Brazil's response to its Zika outbreak.
The findings underscore advice regarding strict precautions in returning travelers, the CDC says.
Also, a microcephaly study launches in Brazil and new mosquito control efforts are being explored.
The WHO said though Zika virus has circulated in Africa before, the effect of an importation from the Americas is unclear.
Also, the CDC shares new guidance on babies and children with acute infections.
Pope Francis's comments coincide with WHO guidance on preventing sexual transmission of the virus.